* win async: use async_dir for the async results file directory
* tried to unify POSIX and PowerShell async implementations of async_dir
* fix sanity issue
* Windows: Add special parameter types
Adding explicit parameter types now exposes this information in the
module documentation, and proves really helpful.
We only do this for non-string types as strings, mostly because strings
are implicit.
PS We also make copyright statements consistent and use #Requires for
explicit library imports
* Type "string" must be type "str"
* A few more Copyright corrections
* More fixes
* Don't add file encoding to Powershell files
* Don't add missing interfacetypes parameter
Otherwise CI demands an incorrect version_added
* Small fix
Jordan Borean
Dag Wieers
Matt Davis